KR100542173B1 - 초점 조정 방법 및 광픽업 장치 - Google Patents

초점 조정 방법 및 광픽업 장치 Download PDF

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Publication number
KR100542173B1
KR100542173B1 KR1020047001771A KR20047001771A KR100542173B1 KR 100542173 B1 KR100542173 B1 KR 100542173B1 KR 1020047001771 A KR1020047001771 A KR 1020047001771A KR 20047001771 A KR20047001771 A KR 20047001771A KR 100542173 B1 KR100542173 B1 KR 100542173B1
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KR
South Korea
Prior art keywords
focus
spherical aberration
error signal
offset
light beam
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KR1020047001771A
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English (en)
Korean (ko)
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KR20040017851A (ko
Inventor
다다노히로유끼
Original Assignee
샤프 가부시키가이샤
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Publication of KR20040017851A publication Critical patent/KR20040017851A/ko
Application granted granted Critical
Publication of KR100542173B1 publication Critical patent/KR100542173B1/ko

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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1392—Means for controlling the beam wavefront, e.g. for correction of aberration
    • G11B7/13925—Means for controlling the beam wavefront, e.g. for correction of aberration active, e.g. controlled by electrical or mechanical means
    • G11B7/13927—Means for controlling the beam wavefront, e.g. for correction of aberration active, e.g. controlled by electrical or mechanical means during transducing, e.g. to correct for variation of the spherical aberration due to disc tilt or irregularities in the cover layer thickness
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/094—Methods and circuits for servo offset compensation
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/0945—Methods for initialising servos, start-up sequences
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/13—Optical detectors therefor
    • G11B7/131—Arrangement of detectors in a multiple array
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1353—Diffractive elements, e.g. holograms or gratings
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1372—Lenses
    • G11B7/1374—Objective lenses
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B2007/0003—Recording, reproducing or erasing systems characterised by the structure or type of the carrier
    • G11B2007/0009—Recording, reproducing or erasing systems characterised by the structure or type of the carrier for carriers having data stored in three dimensions, e.g. volume storage
    • G11B2007/0013—Recording, reproducing or erasing systems characterised by the structure or type of the carrier for carriers having data stored in three dimensions, e.g. volume storage for carriers having multiple discrete layers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1372—Lenses
    • G11B2007/13727—Compound lenses, i.e. two or more lenses co-operating to perform a function, e.g. compound objective lens including a solid immersion lens, positive and negative lenses either bonded together or with adjustable spacing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/0908—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for focusing only
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/0943—Methods and circuits for performing mathematical operations on individual detector segment outputs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/0948—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following specially adapted for detection and avoidance or compensation of imperfections on the carrier, e.g. dust, scratches, dropouts

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)
  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
KR1020047001771A 2001-08-06 2002-07-30 초점 조정 방법 및 광픽업 장치 KR100542173B1 (ko)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JPJP-P-2001-00238192 2001-08-06
JP2001238192 2001-08-06
JPJP-P-2002-00170622 2002-06-11
JP2002170622A JP2003123282A (ja) 2001-08-06 2002-06-11 焦点調整方法および光ピックアップ装置
PCT/JP2002/007769 WO2003015084A1 (en) 2001-08-06 2002-07-30 Focal point adjusting method, and optical pickup device

Publications (2)

Publication Number Publication Date
KR20040017851A KR20040017851A (ko) 2004-02-27
KR100542173B1 true KR100542173B1 (ko) 2006-01-11

Family

ID=26620032

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020047001771A KR100542173B1 (ko) 2001-08-06 2002-07-30 초점 조정 방법 및 광픽업 장치

Country Status (5)

Country Link
US (1) US7260032B2 (zh)
JP (1) JP2003123282A (zh)
KR (1) KR100542173B1 (zh)
CN (1) CN1255787C (zh)
WO (1) WO2003015084A1 (zh)

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WO2004001731A1 (ja) * 2002-06-21 2003-12-31 Sharp Kabushiki Kaisha 光ピックアップの球面収差補償方法、光ピックアップの球面収差合焦ずれ補償方法および光ピックアップ装置
US7209414B2 (en) * 2002-11-15 2007-04-24 Plasmon Lms, Inc Spherical aberration compensation by wavelength
US20040188401A1 (en) * 2003-03-28 2004-09-30 Sadao Mori Laser processing apparatus
JP4171378B2 (ja) 2003-09-04 2008-10-22 株式会社日立製作所 記録用光ディスクの球面収差補正方法，光ディスク記録再生方法及び光ディスク装置
JP4231759B2 (ja) * 2003-09-22 2009-03-04 株式会社日立メディアエレクトロニクス 光情報記録装置
JP4042682B2 (ja) * 2003-11-10 2008-02-06 船井電機株式会社 光ヘッド装置
JP3984970B2 (ja) 2004-04-01 2007-10-03 株式会社日立メディアエレクトロニクス 光ディスク装置、情報再生方法または記録方法
CN100483520C (zh) * 2004-05-28 2009-04-29 松下电器产业株式会社 光盘装置及光盘半导体
JP4331753B2 (ja) * 2004-06-24 2009-09-16 パナソニック株式会社 光ディスク装置および光ディスク装置の集積回路
JP4581825B2 (ja) * 2004-09-01 2010-11-17 ソニー株式会社 光ディスク装置、フォーカスバイアス及び球面収差補正値調整方法
JP2006134498A (ja) * 2004-11-08 2006-05-25 Canon Inc 光学的情報記録再生装置
JP4727971B2 (ja) 2004-11-11 2011-07-20 株式会社日立製作所 光ディスク記録再生装置
JP2008524764A (ja) * 2004-12-20 2008-07-10 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ キャリブレーション・システムの最適化
JP4443471B2 (ja) 2005-06-08 2010-03-31 株式会社日立製作所 ディスク判別方法及び光ディスク装置
JP2007122815A (ja) * 2005-10-28 2007-05-17 Canon Inc 光ディスク装置の球面収差及びフォーカスオフセット調整方法、それを用いた光ディスク装置
JP4668101B2 (ja) * 2006-03-17 2011-04-13 シャープ株式会社 ビタビ復号装置、ビタビ復号方法、ビタビ復号プログラム、および記録媒体
KR100767132B1 (ko) * 2006-03-23 2007-10-12 엘지전자 주식회사 광디스크장치의 포커스 위치 조정방법
KR20080010050A (ko) * 2006-07-25 2008-01-30 삼성전자주식회사 광 디스크 드라이브 및 그 제어 방법
KR100882748B1 (ko) * 2007-09-10 2009-02-09 도시바삼성스토리지테크놀러지코리아 주식회사 포커스 제어 방법 및 이를 이용한 광 디스크 드라이브
JP2009158007A (ja) * 2007-12-26 2009-07-16 Sony Corp 光学ピックアップ装置、光記録再生装置及びギャップ制御方法
KR100917179B1 (ko) * 2008-01-11 2009-09-15 도시바삼성스토리지테크놀러지코리아 주식회사 포커스 서보 제어 방법 및 이를 이용한 광 디스크 드라이브
JP2008192310A (ja) * 2008-05-16 2008-08-21 Hitachi Media Electoronics Co Ltd 光情報記録装置
TWI406275B (zh) * 2010-08-20 2013-08-21 Sunplus Technology Co Ltd 光碟機中尋找最佳聚焦偏壓及球差補償值的方法與裝置
JP5055411B2 (ja) * 2010-08-23 2012-10-24 株式会社日立製作所 光ディスク装置及び光ディスク装置調整方法

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CN1075222C (zh) * 1995-07-27 2001-11-21 松下电器产业株式会社 光盘装置
JP3795998B2 (ja) * 1996-04-30 2006-07-12 パイオニア株式会社 波面収差補正ユニット、波面収差補正装置及び光ピックアップ
EP0865037B1 (en) * 1997-03-13 2008-10-15 Hitachi Maxell, Ltd. Objective lens and optical head using the same
DE69838745T2 (de) 1997-10-06 2008-10-30 Koninklijke Philips Electronics N.V. Detektionssystem der sphärischen aberration und dieses verwendende optische vorrichtung
JPH11120639A (ja) 1997-10-17 1999-04-30 Hitachi Ltd 光磁気情報記録装置
JPH11353681A (ja) * 1998-06-02 1999-12-24 Nikon Corp 光再生装置および光記録媒体
JP2000011388A (ja) 1998-06-19 2000-01-14 Sony Corp 光情報記録再生装置および光情報記録再生方法
JP2000040237A (ja) 1998-07-17 2000-02-08 Sony Corp 光記録再生装置及び光記録再生方法
JP3545233B2 (ja) * 1998-12-08 2004-07-21 シャープ株式会社 球面収差検出装置および光ピックアップ装置
JP3734133B2 (ja) 1999-05-31 2006-01-11 パイオニア株式会社 光記録媒体再生装置におけるフォーカスバイアス調整装置及び調整方法
JP2001216662A (ja) * 2000-02-01 2001-08-10 Pioneer Electronic Corp ピックアップ装置及び情報記録再生装置

Also Published As

Publication number Publication date
US20040196766A1 (en) 2004-10-07
CN1255787C (zh) 2006-05-10
KR20040017851A (ko) 2004-02-27
JP2003123282A (ja) 2003-04-25
US7260032B2 (en) 2007-08-21
CN1565022A (zh) 2005-01-12
WO2003015084A1 (en) 2003-02-20

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